Tool



July 4, 1939. LAK 2,164,825

TOOL

Filed Jan. 4, 1938 2 Sheets-Sheet l 30 ef'fzaalzjmvmn'ola ATTORNEYS July 4, 1939. R. LACK 2,164,825

TOOL

Filed Jan. 4, 1938 2 Sheets-Sheet 2 Patented July 4, 1939 UNITED STATES PATENT OFFICE TOOL Robert'Lack, Pomona, Calif.

Application January 4, 1938, Serial No. 183,379

2 Claims. 01. 33-189) The invention relates to a tool and more par- The opening I2 next to a longer edge thereof ticularly a combination center head level and merges into a V formed recess l3 while threaded bevel protractor into the body I through the opposite longer edge The primary object of the invention is the profor projection into the opening l2 diametrically '5 vision of a tool of this character, wherein the opposite the recess I3 is aset screw 14 for engagesame is adaptable for laying out a line for a key ment with a piece of work, such as a shaft, rod

Way, groove or hole or a series thereof in a shaft, or the like I5- when passed through the said rod or the like with trueness and accuracy. opening l2 and centered by the said recess [3.

Another object of the invention is the provi- Axially aligned with the set screw I4 and tapped x sion of a tool of this character, wherein the coninto a suitablehole H5 in the body H) is a punch 10 struction thereof is novel in its entirety and is guide barrel I! which projects laterally from the susceptible of easy handling, being susceptible of body while held within this barrel is a spring receiving the shaft, rod or the like without the tensioned punch I8, its stem 19 being slidably necessity of reversing the latter in the laying out fitted in the barrel and has the coiled tensionof key seats at opposite ends thereof and also can Sp 29 for the punch Surrounding 15 be d a doubl dged protractor, The outer end of the stem IQ of the punch I8 A further object of the invention is the provip ojects outwardly of the barrel and carries at sion of a tool of this character, which is simple this projected e d a finger hold p 2| S0 in construction, thoroughly reliable and effective that y pu g O Ward y upon the latter and 20 in operation, readily and easily handled, suscepthen relieving the Same the Spring 29 tensioning 20 tible of quick adjustment, compact, strong, durthe punch 18 will drive the same into the work I5 able and inexpensive to manufacture. for t marking eof When held by the set With these and other objects in view, the inscrew I4 centered in the recess l3 and within vention consists in the features of construction, the Opening I2 in the body I0.

combination and arrangement of parts as will be e y at e e having the Opening I2 25 hereinafter more fully described, illustrated in s a thickened area 22 concentrically about the the accompanying drawings, which disclose the Said Opening and projects u a y rom one preferred b di t of th i nti and side of the said body for the strengthening of the pointed out in the claims hereunto appended. letter at t is area.

30 In t accompanying drawings; Close to the other end of the body It! to be dis- 30 Figure 1 is an elevation of the tool constructed posed at One Side O the p g 12 s a turntable in accordance with the invention and being partturret 23, being fitted in a Clearance therefor P ly in ti vided in said body If! and carries a horizontal Figure 2 is an elevation looking toward the opspirit level 24. The turret 23 iS provided With an p s t'e Side thereof. open center 25 and at one side of said turret is 35 Figure 3 is a sectional View on the line 3-3 of provided e protlectol Sector 26 g uated for Figure 2 looking in the direction of the arrows. One-half 0f the Circulatory ation of the tur- Figure 4 i ti n l i on th li 4 4 of ret 23 and these graduations begin at zero and Figure 2 looking in the direction of the arrows. end With One hundred a eighty ees for C0- 40 Figure 5 is a, ie similar to Figure 1 showing action with pointers or indicator marks 21 upon 40 the tool converted for service as a double edged the o y In at diametrically Opposite p s with protractor, respect to the said turret 23. The center of the Similar reference characters indicate correturret is at the longitudinal center of the body sponding parts throughout the several views in It] and similarly the center of the opening I2 is the drawings. at the longitudinal center of the said body It. 45

Referring to the drawings in detail, A desig- The turret is also formed with a laterally olfnates generally the tool in. its entirety conset guide 21' for a rule blade 28 having the usual structed in accordance with the invention and inlineal scales 29 and 3e, respectively, thereon, the Volves a plate-like body l0, preferably made from guide being fitted with a. lock 3| for adjustably metal, having the rounded opposite ends II and locking the rule blade 28 in the use thereof. 50 is of elongated formation. Provided adjacent to The guide 21 is on the side of the turret 23 one end of this body I0 and formed transversely opposite to the side carrying the horizontal spirit therethrough is a shaft-receiving opening l2 of a level 24. size to accommodate shafts, rods or the like of In the use of the tool for laying out key seats varying diameters to a determined maximum. at opposite ends of a long shaft where it is not possible to out both key seats without reversing the shaft, the turret 23 is set at zero, the turret being adjustably held by a knurled lock 32 and is locked at zero. The turret is now placed on the work, such as a shaft, rod or the like I5, and revolved about the latter until the bubble in the level 24 is in position whence the set screw l4 clamps the work holding the tool and shaft fixed relative to each other. Now by snapping the punch l8, a dot is placed on the shaft in that the punch will strike and mark said shaft when snapped. This operation is repeated at the opposite end of the shaft, rod or the like and the two markings will align with each other. The tool is susceptible for use in laying out splined shafts and in the laying of ten splines the turret will have been turned thirty-six degrees and thereafter the tool revolved on the shaft until the bubble in the level 24 is in position again. It is possible to have the tool remain secured on the shaft, rod or the like and the shaft revolved in a shaper or milling machine. Now to use the tool as a double edged protractor, the barrel H with the punch l8 therein is detached and also the set screw I4 is removed whereupon the rule blade 28 is placed in the guide 21 on the turret and such tool is now converted for the use thereof as a double edged protractor.

The tool is susceptible for use in setting the timing on engines any number of degrees before or after dead center by clamping it to the crank shaft of the engine.

What is claimed is:

1. A tool of the kind described comprising a body having a work-receiving opening wholly within the same and also a V-shaped notch communicative with the work-receiving opening, a punch guide barrel connected with the body and opening into the notch, a punch slidably fitted within the barrel for projection into the V-shaped notch, spring tensioning means confined within the barrel and active upon the punch for projecting the same into the notch, and a clamping screw fitting the body for axial alignment with and directly opposite the punch to be projected into the opening in said body.

2. A tool of the kind described comprising a body having a work-receiving opening wholly Within the same and also a V-shaped notch communicative with the work-receiving opening, a punch guide barrel connected with the body and opening into the notch, a punch slidably fitted Within the barrel for projection in to the V- shaped notch, spring tensioning means confined within the barrel and active upon the punch for projecting the same into the notch, a clamping screw fitting the body for axial alignment with and directly opposite the punch to be projected into the opening in said body, and means connected with the punch and exposed eXteriorly of the barrel for retracting said punch against the tensioning means.

ROBERT LACK. 

